«I think the hardest part was not knowing what was happening,» Horowitz says now. He's relaying the story during a late-August conversation in the Toronto Blue Jays' dugout at Rogers Centre, sitting on the bench during batting practice in a sleeveless shirt and his uniform pants. The 26-year-old doesn't seem upset while reliving that night in Chatham and the terror he felt. For one thing, he's spent years working to understand it. For another, he now knows the larger impact sharing his experiences with anxiety can have. -Singh